MAX954EUA+T

Overview

The MAX954EUA+T is a single-supply, ultra-low-power analog device integrating a decompensated operational amplifier and a comparator within an 8-pin μMAX package. It operates on a supply voltage range of 2.4V to 7V with a typical quiescent current of 5μA. The op amp is internally compensated for stability at gains of 10V/V or greater, featuring a typical gain bandwidth of 125kHz and a slew rate of 66V/ms. Both the op amp and comparator outputs are rail-to-rail capable, and the common-mode input voltage range extends from the negative supply rail to within 1.6V of the positive rail.

Feature Summary

• Integrates a high-speed decompensated op amp and a comparator in a compact 8-pin μMAX package
• Features rail-to-rail output stages for both the amplifier and comparator functions
• Includes internal ±3mV hysteresis in the comparator to ensure clean switching with slow-moving signals
• Operates with ultra-low supply current while maintaining linearity under loaded conditions

Applications

• Battery-powered portable instruments and terminals
• Low-frequency local-area alarms and detectors
• Photodiode preamplifiers
• Infrared receivers for remote controls
• Smoke detectors and safety sensors

Procurement Notes

Verify the specific suffix 'EUA' confirms the -40°C to +85°C operating temperature range and the 8-pin μMAX package style. Confirm RoHS compliance status via the '+' designation. Check manufacturer discontinuance notices as availability may be restricted. Ensure design-in compatibility with existing PCB footprints for the μMAX-8 form factor.

Selection Notes

Select this component when a combined low-power amplifier and comparator solution is required in a small footprint. Choose the MAX954 over unity-gain stable variants if circuit designs require gains of 10V/V or greater to utilize its higher bandwidth and slew rate capabilities. Verify that the 125kHz bandwidth meets signal processing requirements and that the 2.4V minimum supply voltage aligns with system power constraints.

Part Context

This device belongs to the MAX951–MAX954 family of ultra-low-power, single-supply amplifiers. While sharing similar packaging and power characteristics, the MAX954 is distinctively configured without an internal reference and features a decompensated op amp optimized for higher frequency applications compared to the unity-gain stable MAX951/MAX953.

Replacement Considerations

Direct pin-compatible substitutes within the same series include the MAX951EUA+T, MAX952EUA+T, and MAX953EUA+T. Note that these alternatives differ in op amp compensation (unity-gain vs. decompensated) and the presence of an internal bandgap reference.